Brushless motor delivers 0-680 RPM, 0-4,800 IPM and 1.2 Joules of impact energy for faster drilling. Compact and ergonomic design at only 273mm overall length. Weighs only 2.8 kg with BL1840 or higher battery (battery not included) for reduced operator fatigue. Vibration absorbing handle moves independently of the motor and hammer mechanism for increased operator comfort. The electronically-controlled brushless motor efficiently uses energy to match torque and RPM to the changing demands of the application. Efficient brushless motor is electronically controlled to optimize battery energy use for up to 50% longer run time per charge. The brushless motor eliminates carbon brushes, enabling the BL Motor to run cooler and more efficiently for longer life. 2-Mode operation for "Rotation Only" or "Hammering with Rotation" for multiple applications. Variable speed trigger enables user to match the speed to application for greater versatility. Built-in L.E.D. light illuminates the work area. One-touch sliding chuck for easy bit changes.